Gas separation performance of polycarbonate membranes modified with multifunctional low molecular-weight additives

Date

2006-01-01

Author

Sen, D.
Kalıpçılar, Halil
Yılmaz, Levent

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The gas permeation performances and various physical properties of dense polycarbonate (PC) membranes containing low molecular-weight additives (LMWA) with functional groups were evaluated. The selected LMWAs were p -nitroaniline, 4-amino 3-nitro phenol, catechol and 2-hydroxy 5-methyl aniline, and LMWA concentration in the membrane was changed between 1 and 10% (w/w). The PC/LMWA membranes had higher ideal selectivities but lower permeabilities than pure PC membrane. The most effective LMWA which provided the highest selectivity and the lowest permeability in membranes was p -nitroaniline and the least effective one was catechol. The selected LMWAs antiplasticized the PC matrix and improved the separation performances even at low concentrations. The glass transition temperature (T-g) of PC/LMWA membranes was lower than that of pure PC membrane. Reduction of T(g)s as a function of p -nitroaniline concentration obeyed to Gordon-Taylor model which indicates antiplasticization type interaction. FTIR spectra of pure and blend membranes also demonstrated the existence of interaction.

Subject Keywords

Filtration and Separation, Process Chemistry and Technology, General Chemistry, General Chemical Engineering

URI

https://hdl.handle.net/11511/39227

Journal

SEPARATION SCIENCE AND TECHNOLOGY

DOI

https://doi.org/10.1080/01496390600735256

Collections

Department of Chemical Engineering, Article

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Citation Formats

D. Sen, H. Kalıpçılar, and L. Yılmaz, “Gas separation performance of polycarbonate membranes modified with multifunctional low molecular-weight additives,” SEPARATION SCIENCE AND TECHNOLOGY, pp. 1813–1828, 2006, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/39227.